Igniter for internal-combustion engines.



J. A. WARREN. IGNITER FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED OCT. 8. ma.

Llfilfififi Patented Nov. 23, 1915.

. Qwuawboz a75sp/7m rre/7 QWi/twwoeo nan JOSEPH ALBERT WARREN, OF SUM'IER, SOUTH CARULINA, ASSIGNOLR, JBY MESNE ASSIGNMENTS, T0 SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

IGNITEE FOR INTERNAL-COMBUSTION ENGINES.

Llltillfifiti.

Specification of Letters Patent.

Application filed October 3, 1913. Serial No. 794,074.

T 0 all whom it may concern:

Be it known that T, J OSEPH ALBERT "WAR- imN, a citizen of the United States, residing at Sumter, in the county of Sumter and State of South Carolina, have invented certain new' and useful Improvements in lgniters for Internal-Combustion Engines, of which the following is a specification, reference being had to the accompanying drawlily invention relates to igniters for internal combustionengines, and particularly to igniters'of the make-and-break electric spark type, and consists of an improved construction of the insulated electrode whereby same may be more thoroughly and permanently insulated from the body of theigniter than has heretofore been possible. A further object is to so place this electrode in the body of the igniter, that it may be readily removed and replaced without disturbing its insulation. p

. Figure 1 is a view partly in section of the insulated member of an igniter constituting my invention. Fig. 2, a view partlyun section of a complete igniter with the nsulated member in place, and Fig. 3, an end View of the inside or cylinder end of the igniter shown in Fig. 2.

Like figures of reference denote the same parts wherever they are shown.

For the sake of illustration a well known form of igniter is shown, but as my invention may be used with any form of makeand-break igniter, I will not describe the complete igniter in detail, but only the assembly of the parts embodying my invention.

Make-and-breakigniters are usually assembled by the engine manufacturer. As a rule, engine manufacturers are not skilled in the construction of electrical appliances and therefore many of them do not realize the importance of properly and thoroughly insulating the parts of the igniter. It has been the practice to employ asbestos and shellac, or common cut mica for surrounding the insulated member of the igniter which has always been placed directly in the body of the igniter, in consequence of which short circuits and other troubles often occur.

In the construction I employ it is possible for the insulated members of the ign'itersto be made by manuiacturers familiar with insame may be readily removed from the igniter body and replaced with a new member without disturbing the insulation or without rammed Nov. as, ram.

the necessity for any electrical knowledge or particular care on the doing the work.

Myimproved, construction of the insulated member of an igniter consists of the electrode stem 1, which is-incased in a tube 2, from which it is insulated by washers of part of the person mica or other suitable insulation 3 and 4.

The end of 1 is threaded, and it, the tube 2 and the insulation 3 and 4:, are clamped together by means of nuts 5 and 6. To form a shoulder for insulation 3, I provide a metallic washer 7 which may be made integral with the stem 1. y

it will be observed that the foregoing construction results in an open space 8 between the stem 1 and tube 2, as the insulation need not extend the entire length of the stem.

Tube 2 is threaded at 9for a nut 10 by means of which it is clamped in the ignite! body 11. The movable member of the igniter is shown at 12.

The parts shown in Fig. 1 are those that must be carefully insulated from the body of the igniter 11, and the face of the insulation 3 and l should be smooth and polished. When mica is used, after the mica has once been compressed by nuts 4 and 5, it should not be disassembled or trouble will result. In constructions heretofore used, to remove the electrode stem 1 from the ignit'er body it was necessary to disassemble the insulation surrounding the stem. This T obviate by simply unscrewing the nut-10, as tube 2 carrying the insulation and .stem 1 may be slipped out or the body of the igniter 11 without in any way altering the pressure on the insulation 3 and t or many other way disturbing the insulation.

This construction enables the unskilled to remove by simply danger of the insulated part of an i5, 3 taking oil one nut, Without a l, causing it short (JlICLlli; or in any other Way affecting the elecerical insulation or relative adjusenient of the partsall, lite need-only be placed in position by the engine inanuf'actm'er.

1 elann 1. In a make and break lgniter, a body, a

' movable electrode mounted on the inner end of a shaft extending; through slid luuly and a eoiipe Ming lined electrode comprising 2 metal tube flzu'iged zit-one end and herh' clear cylindrical opening through end to end, insulating bushings fitte io bolvh ends of the tube and having alined openings; through them centered on the :ixisoil the tube but of lees dian'icter than the inside ii-- alnetei' thereof, a. niece l plate ()I \rushcr eox ering the exposed inner face of ihe inner bushing, and a conducting rod of the Seine diameter as said openings: extending; through both bushings, with a. head at the inner end thereof of seinervlnii larger diameter forin ing the anvil. for the movable electrode, and shouldered to rest against the misher co"- ering the, sidjaeen i insulating" bushing, r iih a nut in threaded engagement with the ouier end of said tube to secure illfi-SMDG in the igniter body, and clamping menus on the outer end of said rod bearing weinsi; the

l i I, outer face or the outer lJUSlllIlg in die i,ube.

(the said bushing being" less than the diameter of diameter of said clumping means and of and u cooperating fixed electrode comprish1g5 flanged metal iubc lending through the body and provided with :1 uul on its outer email to clamp it theceiu. :1 single ('(mdueling; rod extending .thrmigh suid tube with it, inner end exposed as nu anvil. for the nu) able electrode, said rod being (,(Il- %ered in the tube but electrically separated therefrom by suitable insulnlion. and menus on (he miter end of themed clumping the same r' "lly to the tube said menus and the iusuzilion urouiul the rod beingol less diameter than the outer threaded portion of the tube, \rhereb ft-he removal ol the nut. upon seiditube will permit the \ritluiuurul off the fixed el ctrode as u unit from the bodr of {he igniteit.

in testimony whercol l hereunto ullix my in? :re in tlicprcseuve ol mo. \Yituessm.

JOSEPH ALUlZli'l lYA lllllCN. :Vii'iiesaes:

have .\'u'i"rucsi. l-l. ll. VAN [)RUZNT-lill.

each, by undressing the commissioner of Pnlenv,

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